Climate and monthly weather forecastBethesda, TN
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Bethesda, Tennessee, with temperature in the range of an average low of 30.9°F (-0.6°C) and an average high of 45.3°F (7.4°C). January is the coldest month, exhibiting average temperatures of 45.3°F (7.4°C) at the peak and 30.9°F (-0.6°C) at the base. Weather in January »Weather in February
The last month of the winter, February, is a cool month in Bethesda, Tennessee, with an average temperature ranging between max 50.2°F (10.1°C) and min 34.7°F (1.5°C). The transition from January to February sees an average high-temperature of a fresh 50.2°F (10.1°C), indicating a minor variance from the prior month. Weather in February »Weather in March
March, the first month of the spring in Bethesda, is a moderate month, with an average temperature fluctuating between 58.8°F (14.9°C) and 42.1°F (5.6°C). The commencement of March sees a minor shift in the average high-temperature, moving from a fresh 50.2°F (10.1°C) in February to a mild 58.8°F (14.9°C). Weather in March »Weather in April
April is a pleasant spring month in Bethesda, Tennessee, with an average temperature varying between 49.8°F (9.9°C) and 68.9°F (20.5°C). The onset of April brings a temperature shift, with the average high-temperature moving from a mild 58.8°F (14.9°C) in March to an agreeable 68.9°F (20.5°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Bethesda, Tennessee, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 77.5°F (25.3°C). In May, the meteorological conditions subtly change with the average high-temperature edging from an agreeable 68.9°F (20.5°C) in April to a warm 77.5°F (25.3°C). Weather in May »Weather in June
June, the first month of the summer in Bethesda, is still a warm month, with an average temperature varying between 85.5°F (29.7°C) and 65.3°F (18.5°C). June's arrival coincides with a marginal rise in the average high-temperature, moving from May's moderately hot 77.5°F (25.3°C) to a still warm 85.5°F (29.7°C). Weather in June »Weather in July
July in Bethesda, Tennessee, is a tropical summer month, with an average temperature ranging between max 87.4°F (30.8°C) and min 68.5°F (20.3°C). Bethesda reaches its highest average temperatures in July, measuring 87.4°F (30.8°C) at the peak and 68.5°F (20.3°C) at the lowest. The heat index in July is evaluated at a torrid 102.2°F (39°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Bethesda, Tennessee, with an average temperature varying between 67.6°F (19.8°C) and 86.5°F (30.3°C). August's arrival shows an average high-temperature of a still hot 86.5°F (30.3°C), hardly different from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Bethesda, is also a moderately hot month, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 81.3°F (27.4°C). Bethesda experiences a minor change to a moderately hot 81.3°F (27.4°C) in average high-temperature during September, closely reflecting August. Weather in September »Weather in October
October, like September, is an agreeable autumn month in Bethesda, Tennessee, with an average temperature ranging between min 50.2°F (10.1°C) and max 69.4°F (20.8°C). As October begins, there is a decrease in the average high-temperature, falling from a warm 81.3°F (27.4°C) in September to an agreeable 69.4°F (20.8°C). Weather in October »Weather in November
The last month of the autumn, November, is also a moderate month in Bethesda, Tennessee, with an average temperature varying between 40.5°F (4.7°C) and 57.2°F (14°C). The average high-temperature decreases in November, shifting from a pleasant 69.4°F (20.8°C) in October to a mild 57.2°F (14°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Bethesda, Tennessee, with an average temperature varying between 35.8°F (2.1°C) and 49.1°F (9.5°C). The beginning of December brings a minor change in the average high-temperature, shifting from a refreshing 57.2°F (14°C) in November to a frosty 49.1°F (9.5°C). Weather in December »Updated: Aug 1, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the month that records the lowest temperatures, with averages ranging from a high of 45.3°F (7.4°C) to a low of 30.9°F (-0.6°C).
In Bethesda, during the entire year, the rain falls for 141.9 days and collects up to 17.32" (440mm) of precipitation.
Months with snowfall are January through March, November and December.
Throughout the year, there are 6.2 snowfall days, and 0.67" (17mm) of snow is accumulated.
The months with the most snowfall are February and December, with an average 0.2" (5mm) of accumulated snow.
The month with the least sunshine is February, with an average of 4.6h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
April through October are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 14h and 30min of daylight, June has the longest days of the year.
With an average of 10.5h of sunshine, June has the most sunshine of the year.
In Bethesda, the peak average temperatures are observed in July, with a high of 87.4°F (30.8°C) and a low of 68.5°F (20.3°C).
The month with the most rainfall is July, when the rain falls for 17.9 days and typically aggregates up to 2.17" (55mm) of precipitation.
October is the least humid month, with an average relative humidity of 74%.
November is the month with the least rainfall. Rain falls for 7.2 days and accumulates 0.94" (24mm) of precipitation.
The most humid month is December, with an average relative humidity of 80%.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
December is the month with the lowest UV index, with an average maximum UV index of 2.
Average temperature
Bethesda, TN
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.3°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure
Bethesda, TN
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed
Bethesda, TN
- Average wind speed in January:
8.1mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.6mph - Average wind speed in August:
4.6mph - Average wind speed in September:
5mph - Average wind speed in October:
6.4mph - Average wind speed in November:
7.1mph - Average wind speed in December:
7.9mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity
Bethesda, TN
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Bethesda, TN
- Average rainfall in January:
1.3" - Average rainfall in February:
1.69" - Average rainfall in March:
1.06" - Average rainfall in April:
1.54" - Average rainfall in May:
1.42" - Average rainfall in June:
1.54"
- Average rainfall in July:
2.17" - Average rainfall in August:
1.85" - Average rainfall in September:
0.98" - Average rainfall in October:
1.5" - Average rainfall in November:
0.94" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is July (2.17").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days
Bethesda, TN
- Average rainfall days in January:
8.7 days - Average rainfall days in February:
9 days - Average rainfall days in March:
13.1 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
10.3 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (7.2 days).
Average snowfall
Bethesda, TN
The months with the highest snowfall are February and December (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Bethesda, TN
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.1 days - Average snowfall days in March:
1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight / Average sunshine
Bethesda, TN
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 54min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 24min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 48min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Bethesda, TN
- Average sunshine days in January:
20.2 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
13.6 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is July (11.3 days).
Average UV index
Bethesda, TN
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Bethesda, TN
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility
Bethesda, TN
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
